64908080

素因数分解:

$2^4\times 5^1\times {\mathrm{811351}}^1$

素因数の和:811364

約数の個数: 20

約数和(自身を含む): 150911472

約数和(自身を除く): 86003392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 811351, 1622702, 3245404, 4056755, 6490808, 8113510, 12981616, 16227020, 32454040, 64908080]

約数ペア:

[(1, 64908080), (2, 32454040), (4, 16227020), (5, 12981616), (8, 8113510), (10, 6490808), (16, 4056755), (20, 3245404), (40, 1622702), (80, 811351)]